Title (fr)

Publication

Application

Priority

EP 93903541 A 19930119

US 82216492 A 19920116

Abstract (en)

[origin: WO9314588A1] In a CDMA cellular communication system, a forward CDMA channel is used to transmit information from a cell base to the mobile station. Conversely, a reverse CDMA channel is used to transmit information from the mobile station to the cell base station. The transmit portion of the mobile transceiver includes a microphone (12), a codec (16), a vocoder (14), a mask circuit (32), a convolutional encoder (22), a block interleaver (24), a 64-ary orthogonal modulator, an in-phase PN generator (38), a quadrature PN generator (40), filtering circuits (42, 44, 50, 52), a quadrature modulator (54) and a transmitter (56).